The problem of compiling the project SDK 2.1.0

MacOs/ Lion 10.7.3 / SDK version: 2.1.0 / Titanium Studio, build: 2.1.0.201206251749

[INFO] One moment, building ...
[INFO] Titanium SDK version: 2.1.0 (06/28/12 12:16 6e3cab6)
[INFO] iPhone Device family: universal
[INFO] iPhone SDK version: 5.0
[INFO] iPhone simulated device: ipad
[ERROR] 
[ERROR] Error: Traceback (most recent call last):
  File "/Users/mac/Library/Application Support/Titanium/mobilesdk/osx/2.1.0.GA/iphone/builder.py", line 1335, in main
    execute_xcode("iphonesimulator%s" % link_version,["GCC_PREPROCESSOR_DEFINITIONS=__LOG__ID__=%s DEPLOYTYPE=development TI_DEVELOPMENT=1 DEBUG=1 TI_VERSION=%s %s %s" % (log_id,sdk_version,debugstr,kroll_coverage)],False)
  File "/Users/mac/Library/Application Support/Titanium/mobilesdk/osx/2.1.0.GA/iphone/builder.py", line 1241, in execute_xcode
    output = run.run(args,False,False,o)
  File "/Users/mac/Library/Application Support/Titanium/mobilesdk/osx/2.1.0.GA/iphone/run.py", line 41, in run
    sys.exit(rc)
SystemExit: 65

Cleaning the project does not help.

What can I try?